<template>
    <el-container class="home-container">
        <!-- 头部 -->
        <el-header>
            <div>
                <img src="../assets/logo.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="danger" @click='logout'>退出</el-button>
        </el-header>
        <!-- 主体 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapsed ? '64px' : '200px'">
              <div class="toggle-button" @click='toggleCollapse'>|||</div>
              <el-menu
                background-color="#333744"
                text-color="#fff"
                active-text-color="#409EFF"
                unique-opened
                :collapse-transition='false'
                :collapse='isCollapsed'
                router
                :default-active="activePath">
                <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
                  <template slot="title">
                    <i :class="iconObject[item.id]"></i>
                    <span>{{item.authName}}</span>
                  </template>
                  <el-menu-item-group v-for="subItem in item.children" :key="subItem.id">
                    <el-menu-item :index="'/' + subItem.path" @click="saveNavPath('/' + subItem.path)">
                      <template slot="title">
                        <i class="el-icon-menu"></i>
                        <span>{{subItem.authName}}</span>
                      </template>
                    </el-menu-item>
                  </el-menu-item-group>
                </el-submenu>
              </el-menu>
            </el-aside>
            <!-- 内容区 -->
            <el-main>
              <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
  name: 'home',
  created() {
    this.getMenuList()
  },
  data() {
    return {
      menuList: [],
      iconObject: {
        // 一级菜单的icon图标
        147: 'el-icon-magic-stick',
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapsed: false,
      activePath: ''
    }
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
    },
    toggleCollapse () {
      this.isCollapsed = !this.isCollapsed
    },
    saveNavPath (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items:center;
  div{
    height: 100%;
    display: flex;
    align-items:center;
    font-size: 23;
    color: #fff;
    img{
      height: 100%;
  }
  }
}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color: #EAEDF1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 14px;
  text-align: center;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
